When I was working on a cruise ship, a noticeboard poster said it all: “Please remember that Americans consider it acceptable to brag about their kids. Australians do not.”
Bruh. He's literally one of the least Australian people in the world.
He was born Australian, and actively chose to give that up. He's negative Australian. Less an Australian than you are as some random person who just happens to have never been Aussie.
Trust me - we hate him more than you do. Which is probably half the reason he migrated to America about 50 years ago and almost immediately renounced his Australian citizenship. He's all yours.